SIOUX FALLS, S.D. (KELO-AM) - Supporters of Saturday mail deliver will rally Sunday afternoon at the Main Post Office in Sioux Falls.

Rally spokesman Brent Fjerestad says independent studies show the Postal Service could lose $5.3 billion.  He says companies like Netflix have suggested they would stop using the Postal Service if there's no Saturday delivery.

The rally will be held at the Main Post office in Sioux Falls, 320 S. 2nd Avenue, this Sunday at 2pm.